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You searched for: mediatype:texts AND collection:NISTTechNotes AND subject:"Felt."
[texts]The performance of roofing made with asplund felts. (Volume NBS Technical Note 477) - Greenfeld, Sidney H.
A study of the durability of roofing made with Asplund wood fibers was conducted from 1942 to 1967.Concentrations of 0 to 60 percent wood fibers (oak or pine) prepared by three variations of the Asplund process were evaluated.All the mineral-surfaced roll
Keywords: Roofing, Bituminous; Felt
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